Concrete-mixer.



E. W. SEAMANS. CONCRETE MIXER. 'APPLICATION FILED 11u15, 1911.

1,4%151. Patented Nov.5,1912.

3 SHEETS`BHEBT 1.

IIAIIIMIIIIIIIIJIJIIIIIIIII muuynym a I z Edmcwdmmxns E. W. SEAMANS. CONCRETE MIXER. APPLICATION FILED 11111115, 1911.

Patented Nov. 5, i912 LQSJL 3 SHEBTShSHEET 2.

Suva/Lto; E dwoxd LU. S um E. W. SEAMANS.

CONCRETE MIXER. APPLIGATION FILED Mun. 1911.'

Patented Nov. 5, 1912.

3 SHEETS-SHEET 3.

3mm/nto@ E wcwdw. Seamus 'UNTE SATES EDWARD W. sEAMANsoF GRAND RAPIDS, MICHIGAN.

' concnnrniviixnia.

Specification of Letters Patent.

Patentedlov. ith

Application tiled May l15, 1911. Serial No. 627 .281.

combined heater and mixer. and aimer-paiticiilarly to suoli devices for heating and mixing asphalt pavement material and the like, and it consists essentially 'of intproved means for closing and opening the drum;

improved means\for periodically discharging the contents otl the drum, and 4invarions features ot' construction and arrangement as will more fully appear by referl ence to the accompanying drawings, in

which Figure lis a side elevation of a device embodying my invention;4 Fig. -2 a trans-y verse vertical section of the saine; Fig. 3 a.

longitudinal vertical Section ot the saine on an enlarged scale; Fig. 4 a; platof the interior of the drum; F ig. a transverse section of the drinn showing the discharging mechanism 'in operative position; Fig-(3 the saine with the dischargino' mechanism iii position to `close the drum; l* 7 a fractional detail "of the' drum viewed from the inner side and in vertical section; and Fig. S the same viewed from the outer side.

Like numbers re'ler to like parts in all' ol the figures.

l. represents 'a hollow sheet metal cylinder having heads la with central openings. -This cylinder is surrounded by a jacket Qspaced apart therefrom to. contine the smoke and i'lieatedjgases arising from tliejfnel in the tire box.

4 is a smoke stack at the top of the acket. 5 are rings forming circular tracks sur- .-"roiinding the drinn and engaging tianged roller t3 on which the druni is carried. These rollers are connected in pairs by shafts 7 extending parallel with the axis yot' the drum.- To insure equal movement ot tle respective ends of the drum, pinions GL are provided on the respective shafts engaging gears SV surrounding the drum close to the tracks 5.

4'lhe jacket extends close to the, gears and pinions, and the drum is rotated' therein hlv means ota driving pinion Si lngaging one ot the gearsS and mounted on a driving shat't l() operated h v any convenirnt motor (not shown).

1l is a stationary inlet spout' in the lower part of the opening inthe axis ol one ot the heads of the drun1`and having a radialliv projecting apron 1l to direct the material yinto the drinn. This opening and the .spout is closed by a plate l?) removably supported in the spout and slidablv engaging the outer surface of the head la. i

1Q is a discharge spout tixed in the opta ing iny the other head l opposite to the spout l1. within the drum a suitable distance and is open on one side to receive the contents ot the drinn trom a slii'ttable closure'lt inonnt `edpon a shaft l within ythe drum and near the periphery thereof. lliis closure consissot a' tlat plate 16 ot substantially the duncasions of the opening` in the side ot tlnl spout and is provided with substantialhv triangu lar extensions atV opposite ends. tu'ned up- 'ward at right angles and cach secured at their upper angle to the shaft i-l. These ends hold the plate tlat and together with the plate forni a trough to conduct material into the spout and also spaetthe plate apartfrom the shaft whereby'it is shitted in position as hereafter described. lYhen this closure is adjusted opposite the opening -Yin the spout 1Q it closes the saine and prevents tlie- Vescape ot' the contents otlthe cylinder. 'The shaft ltextends outside the head of the drum and is provided with a lever l5 by the closure 1G is adjusted either to close the side opening of the spoiit,"or f-wing to a 7' with Ione edge of the closure within the opening" of the spout and the other edge close tothe periphery ot' the druni and he yond the edge ot'a guide plate lajattaclied tothe surface ot' the drum at one edge and spaced'apart from the saine at the other edge. In shifting to this position one edge posite edge of the same, and the other edge 'swings upward and close to the edge ot' the "p'late 18 and near the shell otl tliedruni. the closure and its uptuined ends thus toria a trough oppositely extending beyond tht` edge of the plate and into the opening ot This spout l2 extends inward of the closure swings down into and across" the opening in the spout and close to the opV the-spent. I n this position the'closure willA having a latch engaging a sector 1T where position,indicated by broken lines in Fig.

operate to 'electually discharge all of the material in the drum received from the plate T189- mto the spout 12 out ofwhich said material is discharged by gravity. On the in terior of the drum are spirally disposed fins 18 each alternately extending inward froml the respective heads of the drum whereby the material in the drum is not only carried terial, preferably asphalt and the other in gredients vsuitable for' forming pavement,

the plate 13 is placed in position to close one end of the ldrum and the closure 16 positioned to close the other end of the same. The contents of the drum can then be thoroughly mixed, and at the same time suitably heated for use.` When suiiciently treated in this manner, the closure 16 is shifted to discharging position' and the contents of the drum discharged thereby, whereupon the same may be again charged and operated as before.

What I claim is A,

l. A mixer, comprisinga rotative drum, a spoutin onehead of the drum and extending within the same, said spout having a side opening Within the drum, a closure consisting of a plate to close said opening andup'turned end extensions to form with said plate a trough, a shaftto Which said endsare fixed and means for shitting said shaft and closureto open or close said opening. Y

2. A mixer, comprising a rotative drum, a. spout in the axis of one head of the drum and having a side opening wit-hin the drum, a ro'ck shaft journaled in the drum `and spaced apart from the spout, a plate adapt-` ed to close said opening and having up turned triangular ends rigidly .attached te the shaft, a guide plate attached at one edge to the shell ofthe drum and spaced. apart from thehsameat the other edge and means ttor shifting the rock shaft vto swing the plate .vith one edge Within. the spout and the other edge near the edge of said guide plate and beyond the Same.

In testimony whereof I aiix my signature in presence of two witnesses'.

EDWA RD W. SEAMANS. Witnesses: l

HAROLD O. VAN ANTWERP, LUTHER V. MoULToN.- 

